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<li class="navelem"><a class="el" href="dir_5956a3e80a20e8e03eb577bedb92689f.html">gpu</a></li><li class="navelem"><a class="el" href="dir_2be73404b46ec2282840cd36fdb9a907.html">impl</a></li>  </ul>
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<div class="title">IVFBase.cu</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) Facebook, Inc. and its affiliates.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &quot;IVFBase.cuh&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;../GpuResources.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;FlatIndex.cuh&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;InvertedListAppend.cuh&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;RemapIndices.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &quot;../utils/DeviceDefs.cuh&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;../utils/DeviceUtils.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &quot;../utils/HostTensor.cuh&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;thrust/host_vector.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;unordered_map&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a80130acfe0a2a4d387a5c9ee4c386b9c">   23</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a80130acfe0a2a4d387a5c9ee4c386b9c">IVFBase::IVFBase</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;                 <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html">FlatIndex</a>* quantizer,</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;                 <span class="keywordtype">int</span> bytesPerVector,</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;                 IndicesOptions indicesOptions,</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;                 MemorySpace space) :</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    resources_(resources),</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    quantizer_(quantizer),</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    bytesPerVector_(bytesPerVector),</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    indicesOptions_(indicesOptions),</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    space_(space),</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    dim_(quantizer-&gt;getDim()),</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    numLists_(quantizer-&gt;getSize()),</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    maxListLength_(0) {</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">reset</a>();</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;}</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;IVFBase::~IVFBase() {</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;}</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">   43</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">IVFBase::reserveMemory</a>(<span class="keywordtype">size_t</span> numVecs) {</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  <span class="keywordtype">size_t</span> vecsPerList = numVecs / <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.size();</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;  <span class="keywordflow">if</span> (vecsPerList &lt; 1) {</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  }</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="keyword">auto</span> stream = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>();</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  <span class="keywordtype">size_t</span> bytesPerDataList = vecsPerList * <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a319568b832518392fed33ea4f8bfc613">bytesPerVector_</a>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <span class="keywordflow">for</span> (<span class="keyword">auto</span>&amp; list : <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>) {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    list-&gt;reserve(bytesPerDataList, stream);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  }</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <span class="keywordflow">if</span> ((<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_32_BIT) ||</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;      (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_64_BIT)) {</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <span class="comment">// Reserve for index lists as well</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordtype">size_t</span> bytesPerIndexList = vecsPerList *</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;      (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_32_BIT ? <span class="keyword">sizeof</span>(int) : <span class="keyword">sizeof</span>(<span class="keywordtype">long</span>));</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordflow">for</span> (<span class="keyword">auto</span>&amp; list : deviceListIndices_) {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;      list-&gt;reserve(bytesPerIndexList, stream);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    }</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;  }</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  <span class="comment">// Update device info for all lists, since the base pointers may</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;  <span class="comment">// have changed</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">updateDeviceListInfo_</a>(stream);</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;}</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">   73</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">IVFBase::reset</a>() {</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.clear();</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;  deviceListIndices_.clear();</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a96240a08b42bd1913e2286d7d514fc56">deviceListDataPointers_</a>.clear();</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">deviceListIndexPointers_</a>.clear();</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">deviceListLengths_</a>.clear();</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>.clear();</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#accc4d96c14643e5f471220cb1e92ac70">numLists_</a>; ++i) {</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.emplace_back(</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;      std::unique_ptr&lt;<a class="code" href="classfaiss_1_1gpu_1_1DeviceVector.html">DeviceVector&lt;unsigned char&gt;</a>&gt;(</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1DeviceVector.html">DeviceVector&lt;unsigned char&gt;</a>(<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a30499eb61763df72cab25ea9d1235251">space_</a>)));</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    deviceListIndices_.emplace_back(</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;      std::unique_ptr&lt;<a class="code" href="classfaiss_1_1gpu_1_1DeviceVector.html">DeviceVector&lt;unsigned char&gt;</a>&gt;(</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1DeviceVector.html">DeviceVector&lt;unsigned char&gt;</a>(<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a30499eb61763df72cab25ea9d1235251">space_</a>)));</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>.emplace_back(std::vector&lt;long&gt;());</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;  }</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a96240a08b42bd1913e2286d7d514fc56">deviceListDataPointers_</a>.resize(numLists_, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">deviceListIndexPointers_</a>.resize(numLists_, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">deviceListLengths_</a>.resize(numLists_, 0);</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#ae25ea0901fb628844868413f51c85bda">maxListLength_</a> = 0;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;}</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keywordtype">int</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">   98</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">IVFBase::getDim</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#aba3e3cfa469e5187f2d553fff10e0250">dim_</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;}</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">  103</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">IVFBase::reclaimMemory</a>() {</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="comment">// Reclaim all unused memory exactly</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#aa02d69306544294521e79be7f81a21cb">reclaimMemory_</a>(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;}</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#aa02d69306544294521e79be7f81a21cb">  109</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#aa02d69306544294521e79be7f81a21cb">IVFBase::reclaimMemory_</a>(<span class="keywordtype">bool</span> exact) {</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="keyword">auto</span> stream = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>();</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  <span class="keywordtype">size_t</span> totalReclaimed = 0;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.size(); ++i) {</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keyword">auto</span>&amp; data = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>[i];</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    totalReclaimed += data-&gt;reclaim(exact, stream);</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a96240a08b42bd1913e2286d7d514fc56">deviceListDataPointers_</a>[i] = data-&gt;data();</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; deviceListIndices_.size(); ++i) {</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keyword">auto</span>&amp; indices = deviceListIndices_[i];</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    totalReclaimed += indices-&gt;reclaim(exact, stream);</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">deviceListIndexPointers_</a>[i] = indices-&gt;data();</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  }</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;  <span class="comment">// Update device info for all lists, since the base pointers may</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;  <span class="comment">// have changed</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">updateDeviceListInfo_</a>(stream);</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  <span class="keywordflow">return</span> totalReclaimed;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;}</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">  136</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">IVFBase::updateDeviceListInfo_</a>(cudaStream_t stream) {</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  std::vector&lt;int&gt; listIds(<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.size());</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.size(); ++i) {</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    listIds[i] = i;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  }</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">updateDeviceListInfo_</a>(listIds, stream);</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;}</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#ae90724e307bbfe49554a2ab77fbd1764">  146</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">IVFBase::updateDeviceListInfo_</a>(<span class="keyword">const</span> std::vector&lt;int&gt;&amp; listIds,</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;                               cudaStream_t stream) {</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;  <span class="keyword">auto</span>&amp; mem = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#a1dda2dc3db1bd62cde6657c5cdbfb6e1">getMemoryManagerCurrentDevice</a>();</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1HostTensor.html">HostTensor&lt;int, 1, true&gt;</a></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    hostListsToUpdate({(int) listIds.size()});</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1HostTensor.html">HostTensor&lt;int, 1, true&gt;</a></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    hostNewListLength({(int) listIds.size()});</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1HostTensor.html">HostTensor&lt;void*, 1, true&gt;</a></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    hostNewDataPointers({(int) listIds.size()});</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1HostTensor.html">HostTensor&lt;void*, 1, true&gt;</a></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    hostNewIndexPointers({(int) listIds.size()});</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; listIds.size(); ++i) {</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <span class="keyword">auto</span> listId = listIds[i];</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keyword">auto</span>&amp; data = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>[listId];</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keyword">auto</span>&amp; indices = deviceListIndices_[listId];</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    hostListsToUpdate[i] = listId;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    hostNewListLength[i] = data-&gt;size() / <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a319568b832518392fed33ea4f8bfc613">bytesPerVector_</a>;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    hostNewDataPointers[i] = data-&gt;data();</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    hostNewIndexPointers[i] = indices-&gt;data();</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;  }</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;  <span class="comment">// Copy the above update sets to the GPU</span></div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor&lt;int, 1, true&gt;</a> listsToUpdate(</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    mem, hostListsToUpdate, stream);</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor&lt;int, 1, true&gt;</a> newListLength(</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    mem,  hostNewListLength, stream);</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor&lt;void*, 1, true&gt;</a> newDataPointers(</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    mem, hostNewDataPointers, stream);</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor&lt;void*, 1, true&gt;</a> newIndexPointers(</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    mem, hostNewIndexPointers, stream);</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="comment">// Update all pointers to the lists on the device that may have</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;  <span class="comment">// changed</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;  runUpdateListPointers(listsToUpdate,</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                        newListLength,</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                        newDataPointers,</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                        newIndexPointers,</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                        <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">deviceListLengths_</a>,</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                        <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a96240a08b42bd1913e2286d7d514fc56">deviceListDataPointers_</a>,</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                        <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">deviceListIndexPointers_</a>,</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;                        stream);</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;}</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#abd66dc9d32e6150b930d78f74d7dd2d7">  193</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#abd66dc9d32e6150b930d78f74d7dd2d7">IVFBase::getNumLists</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#accc4d96c14643e5f471220cb1e92ac70">numLists_</a>;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;}</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keywordtype">int</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a7b1ee21f9919fb077db5e48e91943582">  198</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7b1ee21f9919fb077db5e48e91943582">IVFBase::getListLength</a>(<span class="keywordtype">int</span> listId)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;  FAISS_ASSERT(listId &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">deviceListLengths_</a>.size());</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">deviceListLengths_</a>[listId];</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;}</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;std::vector&lt;long&gt;</div>
<div class="line"><a name="l00205"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">  205</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">IVFBase::getListIndices</a>(<span class="keywordtype">int</span> listId)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;  FAISS_ASSERT(listId &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#accc4d96c14643e5f471220cb1e92ac70">numLists_</a>);</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_32_BIT) {</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    FAISS_ASSERT(listId &lt; deviceListIndices_.size());</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keyword">auto</span> intInd = deviceListIndices_[listId]-&gt;copyToHost&lt;<span class="keywordtype">int</span>&gt;(</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;      <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>());</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    std::vector&lt;long&gt; out(intInd.size());</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; intInd.size(); ++i) {</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;      out[i] = (long) intInd[i];</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    }</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordflow">return</span> out;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_64_BIT) {</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    FAISS_ASSERT(listId &lt; deviceListIndices_.size());</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">return</span> deviceListIndices_[listId]-&gt;copyToHost&lt;<span class="keywordtype">long</span>&gt;(</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;      <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>());</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_CPU) {</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    FAISS_ASSERT(listId &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>.size());</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    FAISS_ASSERT(listId &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>.size());</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keyword">auto</span>&amp; userIds = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>[listId];</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    FAISS_ASSERT(userIds.size() ==</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                 <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">deviceListData_</a>[listId]-&gt;size() / <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a319568b832518392fed33ea4f8bfc613">bytesPerVector_</a>);</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    <span class="comment">// this will return a copy</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    <span class="keywordflow">return</span> userIds;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    <span class="comment">// unhandled indices type (includes INDICES_IVF)</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    FAISS_ASSERT(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keywordflow">return</span> std::vector&lt;long&gt;();</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;  }</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;}</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IVFBase.html#a5027720549de98f4e609d6339099df35">  243</a></span>&#160;<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a5027720549de98f4e609d6339099df35">IVFBase::addIndicesFromCpu_</a>(<span class="keywordtype">int</span> listId,</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;                            <span class="keyword">const</span> <span class="keywordtype">long</span>* indices,</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;                            <span class="keywordtype">size_t</span> numVecs) {</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;  <span class="keyword">auto</span> stream = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">resources_</a>-&gt;<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>();</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;  <span class="keyword">auto</span>&amp; listIndices = deviceListIndices_[listId];</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;  <span class="keyword">auto</span> prevIndicesData = listIndices-&gt;data();</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_32_BIT) {</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    <span class="comment">// Make sure that all indices are in bounds</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    std::vector&lt;int&gt; indices32(numVecs);</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; numVecs; ++i) {</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;      <span class="keyword">auto</span> ind = indices[i];</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;      FAISS_ASSERT(ind &lt;= (<span class="keywordtype">long</span>) std::numeric_limits&lt;int&gt;::max());</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;      indices32[i] = (int) ind;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    }</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    listIndices-&gt;append((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) indices32.data(),</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;                        numVecs * <span class="keyword">sizeof</span>(int),</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;                        stream,</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;                        <span class="keyword">true</span> <span class="comment">/* exact reserved size */</span>);</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_64_BIT) {</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    listIndices-&gt;append((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) indices,</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                        numVecs * <span class="keyword">sizeof</span>(<span class="keywordtype">long</span>),</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;                        stream,</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                        <span class="keyword">true</span> <span class="comment">/* exact reserved size */</span>);</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_CPU) {</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    <span class="comment">// indices are stored on the CPU</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    FAISS_ASSERT(listId &lt; <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>.size());</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    <span class="keyword">auto</span>&amp; userIndices = <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">listOffsetToUserIndex_</a>[listId];</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    userIndices.insert(userIndices.begin(), indices, indices + numVecs);</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="comment">// indices are not stored</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">indicesOptions_</a> == INDICES_IVF);</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;  }</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  <span class="keywordflow">if</span> (prevIndicesData != listIndices-&gt;data()) {</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">deviceListIndexPointers_</a>[listId] = listIndices-&gt;data();</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;  }</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;}</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;} } <span class="comment">// namespace</span></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_accc4d96c14643e5f471220cb1e92ac70"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#accc4d96c14643e5f471220cb1e92ac70">faiss::gpu::IVFBase::numLists_</a></div><div class="ttdeci">const int numLists_</div><div class="ttdoc">Number of inverted lists we maintain. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00089">IVFBase.cuh:89</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_ae25ea0901fb628844868413f51c85bda"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#ae25ea0901fb628844868413f51c85bda">faiss::gpu::IVFBase::maxListLength_</a></div><div class="ttdeci">int maxListLength_</div><div class="ttdoc">Maximum list length seen. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00113">IVFBase.cuh:113</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html_aa0354aa570c24e17a9f8a6a45b153ed2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">faiss::gpu::GpuResources::getDefaultStreamCurrentDevice</a></div><div class="ttdeci">cudaStream_t getDefaultStreamCurrentDevice()</div><div class="ttdoc">Calls getDefaultStream with the current device. </div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8cpp_source.html#l00023">GpuResources.cpp:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a80130acfe0a2a4d387a5c9ee4c386b9c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a80130acfe0a2a4d387a5c9ee4c386b9c">faiss::gpu::IVFBase::IVFBase</a></div><div class="ttdeci">IVFBase(GpuResources *resources, FlatIndex *quantizer, int bytesPerVector, IndicesOptions indicesOptions, MemorySpace space)</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00023">IVFBase.cu:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a53f3c382a79b7f89630a85dfbc3a1fed"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a53f3c382a79b7f89630a85dfbc3a1fed">faiss::gpu::IVFBase::listOffsetToUserIndex_</a></div><div class="ttdeci">std::vector&lt; std::vector&lt; long &gt; &gt; listOffsetToUserIndex_</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00125">IVFBase.cuh:125</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html">faiss::gpu::FlatIndex</a></div><div class="ttdoc">Holder of GPU resources for a particular flat index. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cuh_source.html#l00021">FlatIndex.cuh:21</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4d44e8aebc380b7c846a8d8e6e835540"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">faiss::gpu::IVFBase::getDim</a></div><div class="ttdeci">int getDim() const </div><div class="ttdoc">Return the number of dimensions we are indexing. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00098">IVFBase.cu:98</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a7b1ee21f9919fb077db5e48e91943582"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a7b1ee21f9919fb077db5e48e91943582">faiss::gpu::IVFBase::getListLength</a></div><div class="ttdeci">int getListLength(int listId) const </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00198">IVFBase.cu:198</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a02e1e2d080ee31bf7835f89b9f2a13a9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">faiss::gpu::IVFBase::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00043">IVFBase.cu:43</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_aa02d69306544294521e79be7f81a21cb"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#aa02d69306544294521e79be7f81a21cb">faiss::gpu::IVFBase::reclaimMemory_</a></div><div class="ttdeci">size_t reclaimMemory_(bool exact)</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00109">IVFBase.cu:109</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html">faiss::gpu::GpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8h_source.html#l00021">GpuResources.h:21</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1DeviceVector_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1DeviceVector.html">faiss::gpu::DeviceVector</a></div><div class="ttdef"><b>Definition:</b> <a href="DeviceVector_8cuh_source.html#l00026">DeviceVector.cuh:26</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a3a1c2031a4763f7d55bc8a400c63af66"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a3a1c2031a4763f7d55bc8a400c63af66">faiss::gpu::IVFBase::deviceListLengths_</a></div><div class="ttdeci">thrust::device_vector&lt; int &gt; deviceListLengths_</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00110">IVFBase.cuh:110</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a9aedcf0e6a20b908980ae96d73461f4c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a9aedcf0e6a20b908980ae96d73461f4c">faiss::gpu::IVFBase::deviceListIndexPointers_</a></div><div class="ttdeci">thrust::device_vector&lt; void * &gt; deviceListIndexPointers_</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00106">IVFBase.cuh:106</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html_a1dda2dc3db1bd62cde6657c5cdbfb6e1"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html#a1dda2dc3db1bd62cde6657c5cdbfb6e1">faiss::gpu::GpuResources::getMemoryManagerCurrentDevice</a></div><div class="ttdeci">DeviceMemory &amp; getMemoryManagerCurrentDevice()</div><div class="ttdoc">Calls getMemoryManager for the current device. </div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8cpp_source.html#l00033">GpuResources.cpp:33</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a96240a08b42bd1913e2286d7d514fc56"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a96240a08b42bd1913e2286d7d514fc56">faiss::gpu::IVFBase::deviceListDataPointers_</a></div><div class="ttdeci">thrust::device_vector&lt; void * &gt; deviceListDataPointers_</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00102">IVFBase.cuh:102</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a7ea671876443c93436499ad581f16997"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">faiss::gpu::IVFBase::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00073">IVFBase.cu:73</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a05e6400358ec1f529a67209d3f24cc63"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a05e6400358ec1f529a67209d3f24cc63">faiss::gpu::IVFBase::resources_</a></div><div class="ttdeci">GpuResources * resources_</div><div class="ttdoc">Collection of GPU resources that we use. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00080">IVFBase.cuh:80</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a319568b832518392fed33ea4f8bfc613"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a319568b832518392fed33ea4f8bfc613">faiss::gpu::IVFBase::bytesPerVector_</a></div><div class="ttdeci">const int bytesPerVector_</div><div class="ttdoc">Number of bytes per vector in the list. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00092">IVFBase.cuh:92</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_acc695610c9513952b8d234dc0db78e5c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#acc695610c9513952b8d234dc0db78e5c">faiss::gpu::IVFBase::updateDeviceListInfo_</a></div><div class="ttdeci">void updateDeviceListInfo_(cudaStream_t stream)</div><div class="ttdoc">Update all device-side list pointer and size information. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00136">IVFBase.cu:136</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4a4ed220b9433aa788ed32db8f20a9db"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">faiss::gpu::IVFBase::getListIndices</a></div><div class="ttdeci">std::vector&lt; long &gt; getListIndices(int listId) const </div><div class="ttdoc">Return the list indices of a particular list back to the CPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00205">IVFBase.cu:205</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_afb6d10e23d6448c10f472b9234e0bcab"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#afb6d10e23d6448c10f472b9234e0bcab">faiss::gpu::IVFBase::indicesOptions_</a></div><div class="ttdeci">const IndicesOptions indicesOptions_</div><div class="ttdoc">How are user indices stored on the GPU? </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00095">IVFBase.cuh:95</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1HostTensor_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1HostTensor.html">faiss::gpu::HostTensor</a></div><div class="ttdef"><b>Definition:</b> <a href="HostTensor_8cuh_source.html#l00020">HostTensor.cuh:20</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a30499eb61763df72cab25ea9d1235251"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a30499eb61763df72cab25ea9d1235251">faiss::gpu::IVFBase::space_</a></div><div class="ttdeci">const MemorySpace space_</div><div class="ttdoc">What memory space our inverted list storage is in. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00098">IVFBase.cuh:98</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a2facc7285107de1f24d3471cbcf15f26"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a2facc7285107de1f24d3471cbcf15f26">faiss::gpu::IVFBase::deviceListData_</a></div><div class="ttdeci">std::vector&lt; std::unique_ptr&lt; DeviceVector&lt; unsigned char &gt; &gt; &gt; deviceListData_</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00119">IVFBase.cuh:119</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1DeviceTensor_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1DeviceTensor.html">faiss::gpu::DeviceTensor</a></div><div class="ttdef"><b>Definition:</b> <a href="DeviceTensor_8cuh_source.html#l00022">DeviceTensor.cuh:22</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_aba3e3cfa469e5187f2d553fff10e0250"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#aba3e3cfa469e5187f2d553fff10e0250">faiss::gpu::IVFBase::dim_</a></div><div class="ttdeci">const int dim_</div><div class="ttdoc">Expected dimensionality of the vectors. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cuh_source.html#l00086">IVFBase.cuh:86</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a5027720549de98f4e609d6339099df35"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a5027720549de98f4e609d6339099df35">faiss::gpu::IVFBase::addIndicesFromCpu_</a></div><div class="ttdeci">void addIndicesFromCpu_(int listId, const long *indices, size_t numVecs)</div><div class="ttdoc">Shared function to copy indices from CPU to GPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00243">IVFBase.cu:243</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_ac9b69e1b2582cb2c064b5fff60d31cc8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">faiss::gpu::IVFBase::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00103">IVFBase.cu:103</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_abd66dc9d32e6150b930d78f74d7dd2d7"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#abd66dc9d32e6150b930d78f74d7dd2d7">faiss::gpu::IVFBase::getNumLists</a></div><div class="ttdeci">size_t getNumLists() const </div><div class="ttdoc">Returns the number of inverted lists. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00193">IVFBase.cu:193</a></div></div>
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